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151 Perinton Parkway, Fairport NY 14450 • 585 425-5965 • Fax 585 425-5973 • www.gdimeters.com
MD100 series PCB Mount LCD ModuleHour meter, Service Alarms, Tachometer, Volt MeterStandard and custom LCD display messages, wide AC/DC input voltages
The MD module has four pins for direct printed circuit board mounting for use in equipment panels and dashes. This product has CE and ETL approvals and is suitable for a wide range of applications.
Hour Meter• Non resettable equipment run hours• Total timer shows 0.1 hour displayed resolution up to
99,999.9 hours, then 1 hour resolution up to 999,999 hours.
• Hour glass symbol flashes On/off to indicate counting time.
• Recorded resolution 1 second
Timers• 2 Independent timers, resettable (Timer 1, Timer 2)• Timers show 0.1 hour displayed resolution up to 99,999.9
hours, then 1 hour resolution up to 999,999 hours.• One optional alarm per timer
Service Alerts• Up to three (3) Service alerts, automatic or resettable• One time breakin interval option for each alarm (1 to
9999 hours)• Normal interval: 1 to 999,999 hours• Warning threshold (1-99 hours)• Standard and Custom Alerts available on the LCD display
Counter• Event counter, or power up/power down cycle counter• Up or down counting from 1 to 999,999 counts• Optional count down preload, or count up to maximum
value• Resettable • Max input rate: 500 Hz• Alarm on LCD display available when count threshold is
reached• Output available when count threshold is reached
Tachometer• Minimum RPM: 10• Maximum RPM: 30,000• Resolution: 1 RPM• Firing patterns: 1 pulse=1 RPM, 1 pulse=2 RPM, 2
pulses=1 RPM **other firing patters available
• Configurable noise rejection• Maximum RPM recall and clear option
Volt Meter• Monitor and display equipment voltage• Over/under voltage alarms available
Input Alarms• Up to three (3) prioritized alarms based on external
digital inputs• Standard and Custom Alerts available on the LCD display
LCD Display• LCD: digit height 5.2mm, high UV rated for outdoor use,
wide temperature range (-40C to 70C)• LCD viewing area: 26.8mm x 10.8mm• Viewing direction: 12 o’clock• One or two frame messages in LCD segments• Icons: BATT, SVC, TMR, TMR2, CTR, CTR2, RPM
(Note: other custom LCD or Icon options available)
Electrical Ratings
Model Input DC Input ACMax DC run current
Typ. DC run current
Max AC run current
MD100 5-12vdc 5-15vac 2.5mA 1.3mA 4.4mA
MD110 12-48vdc 15-75vac 2.5mA 1.4mA 4.1mA
MD120 48-150vdc 75-287vac 2.2mA 1.2mA 2.2mA
• EEPROM memory retention: 30 years without power• Quartz crystal accuracy
Note: Specifications are preliminary and are subject to change without prior notification. All rights reserved by Global Digital Instruments LLC 5/13.
VOID AREA WHEN MOUNTINGFLUSH WITH PCB
INPUT (I)
Recommended PCB Footprint
RESET (R)
V+ (P)GROUND (N)
1.26"[32.0 mm]
.71"[18.0 mm]
1.10"[28.0 mm]
.55"[14.0 mm]
4X ∅ 0.04"[∅ 1.0 mm]
0.30"[7.6 mm]
0.79"[19.9 mm]
RI
PN
1.26"[32.0 mm]
0.71"[18.0 mm]
0.39"[10.0 mm]
1.02"[26.0 mm]
0.21[5.4 mm]
Model InputMD100 5-12vdc/5-15vac
MD110 12-48vdc/15-75vac
MD120 48-150vdc/75-287vac
Model number example: MD100-140-8111 (module, 5-12vdc/5-15vac, 4PCB pins, Standard LCD, hour meter only.
Environmental Specifications• Operating temperature: -40°C to 70°C• Humidity: SAE J1378 95% RH• Weight 0.3 oz.• Warranty: Two years for OEMs
Electrical Tests• Immunity and Emissions:
IEC 61326-1, IEC 61000-4-3• ESD:
IEC 61000-4-2
Environmental Tests• Ultraviolet Test:
UV Filter: 340nm, UV Sensor: Daylight Irradiance: 0.35W/m^2 Total time: 2220 light hrs (2800 KJ/m^2 absorbed)
• Temperature Cycle Test: Range: -40°C to +70°C Ramp/Soak: 1 hr / 2 hr Total cycle / time: 500 Hours
OEM Options• Automatic on/off Service Alerts• Reset clear Service Alerts• Custom LCD, messages, and Icons• I/O Communications to host equipmen
Agency Approvals• CE, ETL certified